Active-limiting-amplifier


Posted on Apr 20, 2012    6333

The modified inverting amplifier uses an active clamp to limit the output swing with precision. Allowance must be made for the V8E of the transistors. The swing is limited by the base-emitter breakdown of the transistors.


Active-limiting-amplifier
Click here to download the full size of the above Circuit.

A simple circuit uses two back-to-back zener diodes across the feedback resistor, but tends to give less precise limiting and cannot be easily controlled.




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